Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/404
Name: Education and demonstration > Means for demonstrating apparatus, product, or surface configuration, or for displaying education material or student's work > Plaque (e.g., disk, etc.) turnable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith
Description: Subject matter including a stiff sheet or board pivotal relative to a pointer, an aperture in a second stiff sheet or board, or some other indexing means so that various points on first mentioned sheet or board can be brought into register with said pointer, said aperture in said second sheet or board, or other indexing means as desired.










Query failed!